Revert "Simplified condition for lazy line."

This reverts commit 4d2d486333c358eb3adf3d0649163e319a3b8b69.

This commit caused a valgrind invalid read.

==29731== Invalid read of size 4
==29731==    at 0x40500E: S_process_line (blocks.c:1050)
==29731==    by 0x403CF7: S_parser_feed (blocks.c:526)
==29731==    by 0x403BC9: cmark_parser_feed (blocks.c:494)
==29731==    by 0x433A95: main (main.c:168)
==29731==  Address 0x51d5b60 is 64 bytes inside a block of size 128 free'd
==29731==    at 0x4C27D4E: free (vg_replace_malloc.c:427)
==29731==    by 0x4015F0: S_free_nodes (node.c:134)
==29731==    by 0x401634: cmark_node_free (node.c:142)
==29731==    by 0x4033B1: finalize (blocks.c:259)
==29731==    by 0x40365E: add_child (blocks.c:337)
==29731==    by 0x4046D8: try_new_container_starts (blocks.c:836)
==29731==    by 0x404F12: S_process_line (blocks.c:1015)
==29731==    by 0x403CF7: S_parser_feed (blocks.c:526)
==29731==    by 0x403BC9: cmark_parser_feed (blocks.c:494)
==29731==    by 0x433A95: main (main.c:168)

0 files changed, 0 insertions, 0 deletions